conkling



(No Model.)

2 Sheets-Sheet 2. J. P. CONKLING. MAGNETIC ORE SEPARATOR.

Patented Apr. 28, 1891.

INVENTOI? B y /ugtzzma ATTORNE rs WITNESSES:

THE Nonms'rzrzas coi, PHoro-u-mc WASHINGTON n c UNITED STATES PATENTOFFICE.

JOHlX P. CQNKLING, OF GLENS FALLS, NEW YORK, ASSIGNOR TO GURDON CONKLING, OF SAME PLACE.

MAGNETiC-ORE SEPARATOR.

SPECIFICATION forming part of Letters Patent No. 451,370, dated April28, 1891.

Application filed September 13' 1890. Serial No. 364,879. (No model.)

To all whom it may concern:

Be it known that I, JOHN P. CONKLING, a citizen of the United States,residing at Glens Falls, in the county of Warren and State of NewYork,have invented new and useful Improvements in Magnetic Separators,of which the following is a specification.

The object of my improvement is to provide a machine in which themagnetic ore will be thoroughly, economically, and convenientlyseparated from the gangue and tailings.

In the accompanying drawings I have shown an apparatus embodying myinvention; but I do not wish to be understood as confining myself to theparticular form of apparatus shown.

Figure 1 is a central longitudinal section of the machine. Fig. 2 is across-section of the same through the line 2 2, Fig. 1. Fig. 3 shows theconnections between the magnets and the commutator. Fig. lis amodification.

a is the hopper, in which the original ore is deposited.

b is a revolving cylinder arranged below the oblong discharge-openin gand having its bearings vertically adjustable by means of setscrews 0and 0, so as to vary the available opening for the discharge of the orefrom the hopper.

e is a conveyer-belt mounted upon the drumsf and f, one or both of whichmay have a sliding bearing g, controlled by a screw 9.

h is a cover which continues from the point at which the ore isdeposited on the conveyer until the cylinder vlis reached. This cylinderi is composed of brass or other non-magnetic material, and is secured toa shaft j, which is mounted in bearings made vertically adjustable bymeans of the set-screws 7e 7e k Provision is made for revolving theshaftj by means of the pulley Z. lVithin the cylinder t', secured to theshaft 9', so as to radiate from the center thereof, are a number ofseries of electro-magnets m n 0 p q r.-

Ihave shown two horseshoe magnets in each series, although the number isnot material, and I have shown the plane of each magnet as coincidingwith the plane of the center of the shaft.

Each pole of each magnet is provided with a separate pole-pieee,'as q (1and each polepiece forms the arc of a circle in contact with the innersurface of the cylinder 1', and preferably ext-ending until within ashort distance of its neighboring pole-pieces, as shown in the drawings.The electricity for operating these magnets is supplied through thebrushes 8 s and the commutator if, the connections being such that eachseries of electromagnets is thrown into and maintained in current solong as its pole-pieces are on the opposite side of the shell ofcylinder r1 to the conveyor; but each series of electro-magnets arethrown out of current during the balance of their rotation. Such anarrangement of connections is illustrated in Fig. 3.

WVhen the original ore has been conveyed to a point under the cylinder6, the series of electro-magnets through which the currentis thenpassing (lettered q in Fig. 1) will attract the particles of magneticore and cause them to jump up and adhere to the surface of the cylinder2'. As this cylinder and its contained magnets revolve, however, in thedirection of the arrow, the particles of ore adhering to its surfacewill be quickly carriedinto the chute to, which point having beenreached the current will be thrown out of the series of magnets qinto'the series 19, and there being no magnetic force to hold them fasttheparticles will drop off into the chute u and be collected in asuitable receptacle below. Should any particles still adhere, they willbe brushed off by the rotary brush a. The tailings will remain upon theconveyer and pass off over the drum f into the chute o. "w is the pulleyby which the conveyer-belt is revolved.

In the modification shown in Fig. 4 an inclined table is substituted asconveyer in place of the conveyor-belt already described.

The original ore is discharged from the 110pper a, over the cylinder 0,upon the inclined table 6', which is faced with polished glass c. Itpasses down this incline under cover h until it comes under the cylinder2', when the magnetic ore will be attracted by that cylinder and carriedoff into the chute u, as already described in connection with the otherfigures. The tailings will pass on down the incline and be discharged atthe bottom. The table is hinged at e and provided with means ofadjustment at the bottom, as shown, so that its angle of inclination canbe varied.

I am aware of Letters Patent of the United States No. 883.863, grantedto Gurdon Conkling June 5, 1888, in which is described a machine whereina supplemental belt and a magnet are combined with a convcyer-belt, sothat the magnet attracts the magnetic ore onto the surface of thesupplemental belt which carries it elf of the conveyer and drops it inarcceptacle separate from the tailings. I make no claim to a machineconstructed as shown in said patent.

\Vhat I claim as new, and desire to secure by Letters Patent, is-

l. The combinationof the conveycr,the rotary shaft arranged transverselyabove the same, the non-magnetic cylinder attached to the shaft, theseveral sets of eleetro-magnets attached to and rotating with the shaft,and each pole of every magnet having an independent segmental pole-pieceforming the are of a circle and in superficial contact with the internalsurface of the cylinder, and means for directing a current ofelectricity through cachet the electro-magnets in a set when the latteris presented opposite the convcyer, substantially as described.

2. The combination of the conveyer, the feed-hopper, the rotary shaft,the non-magnetic cylinder secured to the shaft, the. cover supportedabove the conveyor and extending from the point where the ore isdeposited 011 the eonveycr to a point in proximity to the periphery ofthe cylinder, the several sets of electro magnets attached to androtating with the shaft, and means for directing, a current ofelectricity through each of the electromagnets in a set when the latteris'presented opposite the eonveyer, substantially as described.

3. A magnetic separator consisting of the conveyer, the feed-hopper, thetransverse rotary shaft, the non-magnetic cylinder secured to the shaft,the cover supported above the conveyor and extending from the pointwhere the ore is deposited on the conveyer to a point in proximity tothe periphery of the cylinder, the several sets of eleetro-magnetsattached to and rotating with the shaft and each pole of every magnethaving an independentsegmental pole-piece forming the are of a circleand in surperficial contact with the internal snrt'aee of the cylinder,and means for directing a current of electricity through each of theelectro-magnets in a set when the latter is presented opposite theeonveyer, substantially as described.

In testimony whereofI have hereunto set my hand in the presence of. twosubscribing witnesses.

JOHN I. ()ONKLING.

Witnesses:

Wit. (3. ILtUFu, E. 1 KAS'IENHUBER.

